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Old 01-24-2016, 07:10 PM #1
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Default 6X Cylindrical pair test from group buy.

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Old 01-24-2016, 09:32 PM #2
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Default Re: 6X Cylindrical pair test from group buy.

I tested Dave's 6x lens on 07E...are your cyls also from Dave?
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Old 01-24-2016, 09:53 PM #3
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Default Re: 6X Cylindrical pair test from group buy.

Sorry, Dave is owner of lasershowparts.com, Australia.
I purchased some 6x cyl lens some days ago. My lens looks exactly the ones you have.
Where did you purchase yours? have link to groupbuy?
tnx!

my test for 6x and 07E here:
http://www.photonlexicon.com/forums/...582#post323582
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Old 01-24-2016, 10:08 PM #4
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Default Re: 6X Cylindrical pair test from group buy.

Is this what you bought from Dave in Australia?

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Old 01-24-2016, 10:26 PM #5
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Default

I also purchased these kits some months ago. But this kit is 4x cyls not 6x. (and f2 collis)
He sells 6x cyls as well, however not listed on his site.

Where do you get your cyls from? oplasers thru groupbuy?


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Is this what you bought from Dave in Australia?

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Old 01-24-2016, 10:43 PM #6
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Default Re: 6X Cylindrical pair test from group buy.

LPF member Glutton came up with the 6X cylinder lens pairs somewhere and set up a group buy, I have no clue where from though.
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Old 01-26-2016, 12:44 AM #7
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Default Re: 6X Cylindrical pair test from group buy.

Quote:
Originally Posted by RedCowboy View Post
These cylindrical pairs are cool and not hard to adjust, just wear your laser safety glasses and focus your G2 to infinity or 15-20 feet and adjust distance and alignment, see how tight you can get it, I even want to put a pair on a 7875 and an 07E
Energy density it greatly improved, follow up with a Beam Expander and that would really give some working range.
Well....See you now C-lenses on a NDG7475 with a Beam Expander here...

ZACOP Laser: 520nm 1350 mW after 405-G2 lenses, corrective optics and Linos BE !!!

And for C-lenses applied to a NUBM07E....see my sig. link for the Syk Blue Ramjet....Yes...Cylindrical lenses ( C-Lenses ) are cool !!! Again....for the
100th time....they will not give you a perfect dot.....but will help greatly to lower divergence.

Also....I suggest you order a 2mm EFL Collimation lens from LSP.... That May work better with the 044E....not sure....but I suspect it will lower the divergence a bit more !!

Note: Can we get down <1.0 mRad with the 044E ??? Dunno ??? If I had a
044E....that is what I would try !!

Beam out
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Old 01-26-2016, 07:50 AM #8
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Default Re: 6X Cylindrical pair test from group buy.

Have not tested but sure you can get down <1mrad for 044E, the question is:
Can I get down <1mrad @"x" beam waist??...for example: sure you can not get down <1mrad @2-3mm beam waist!!

044E is not worse than P73, and I can get 0,9mrad @5mm waist on P73 with F2mm and 4x cyls.

You can also get 0,9mrad @5mm waist on p73 with G2. the difference is:

4x CYLS:
--f2mm colli: 1st PCV @35mm from diode: you get 0,9mrad @5mm waist
--G2 colli (f:4,1mm): 1st PCV @80mm from diode: you also get 0,9mrad @5mm waist....but beampath is +45mm long!
or...
6x CYLS
--G2 colli (f:4,1mm): 1st PCV @35mm from diode: you also get 0,9mrad @5mm waist aprox

So you need less distance with F2, but results are the same.
High divergence beam (with f2) have more effect on CV cyl lens, ie more expansion, this is why cyls can be near to diode (f2 colli) for the same results.
We also get more expansion if cyls set is far from diode, and viceversa.

So, the more expansion possible in the smallest footprint, is in theory: F2 collis + 6x cyls....but not tested, and probably we get >5mm waist beam.
I personally don't want >5mm...my scanners can't handle that and 5mm is a good compromise beam energy density vs beam divergence....but sure its interesting for handheld devices





Quote:
Originally Posted by CDBEAM777 View Post
Well....See you now C-lenses on a NDG7475 with a Beam Expander here...

ZACOP Laser: 520nm 1350 mW after 405-G2 lenses, corrective optics and Linos BE !!!

And for C-lenses applied to a NUBM07E....see my sig. link for the Syk Blue Ramjet....Yes...Cylindrical lenses ( C-Lenses ) are cool !!! Again....for the
100th time....they will not give you a perfect dot.....but will help greatly to lower divergence.

Also....I suggest you order a 2mm EFL Collimation lens from LSP.... That May work better with the 044E....not sure....but I suspect it will lower the divergence a bit more !!

Note: Can we get down <1.0 mRad with the 044E ??? Dunno ??? If I had a
044E....that is what I would try !!

Beam out

Last edited by jors; 01-26-2016 at 08:28 AM.
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Old 01-26-2016, 08:09 PM #9
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Default Re: 6X Cylindrical pair test from group buy.

Since you already have a UV source, get a bottle of CRL UV adhesive (30g/$16 available on Amazon) rather than the "As Seen on TV" Bondic stick that gives you far less (4g+light/$20, or 4g/$10 refill) for a higher price.
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Old 01-28-2016, 03:17 AM #10
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Default Re: 6X Cylindrical pair test from group buy.

Yeah, it's not our fault that we want to rep the same people! They deserve it! Maybe it should just have a cool-down timer.
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Old 01-30-2016, 01:19 AM #11
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Default Re: 6X Cylindrical pair test from group buy.

Quote:
Originally Posted by RedCowboy View Post
Working with these 6x cylindrical pairs I find the divergence is substantially improved, yes I know that's the idea but that means with a telescope reduction we can keep an energy dense beam over a much longer distance, these have some real possibilities.

The video is impressive. I purchased a pair of these and while intellectually, I knew they were small, was shocked about how small they actually are when they arrived! I would like to know how you finally set them up with respect to the beam.
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Old 02-02-2016, 08:34 AM #12
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Default Re: 6X Cylindrical pair test from group buy.

Looks great! That glue is badass too!
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Old 02-05-2016, 07:33 PM #13
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Default Re: 6X Cylindrical pair test from group buy.

Wow, Cowboay, you never cease to amaze me! Thanks for the cyl pr instructions. You really tamed the 44 and apparently, without much loss of power.

I have been racking my brain trying to envision a way to accomplish this without such a large frame so to speak but with some very thin wires that would attach to the bases of the lense to get them in the correct orientation...and then be able to attach to anoth small set of wires (thin metal beams if you will,) to the sink.

I am wondering if you could use that UV glue. Speaking of the glue, the most difficult aspect of glass is the fact that it is smooth. I have usually used some kind of epoxy, in fact I repaired something the other day with a clear (not yellow type) epoxy. I have found that epoxy handles sheering forces fairly well. Since the cyl pr should not be subject to sheering forces, I suspect that the UV would work really well with a slender steel wire like mount.

BTW, I guess we listen to the same radio programs.

I need to come to GA and check out all of your projects!

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Old 02-08-2016, 01:04 PM #14
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Default Re: 6X Cylindrical pair test from group buy.

Hi guys,

I bought some great lenses from Mateusz from OPT Lasers. They are all 12x12mm so very easy to build assembly for. Results are great!!

I have been finally doing some more tests with these cylindric lenses and NUBM44 diode.

I have one 2x, two 3x lenses which I'm using together in different combinations. Last friday i got finally to test them all and take some notes and photos.
I'll post them in more detail in separate thread as soon as i get the photos off my phone

in short:

with combo producing a 9x squeeze I was getting 0.9mRad after G1 or G2 lens (not sure which or if there are major difference between G1 and G2)

With x18 by squeeze I got about 0.5mRad squeeze with an artifact I will show on photos. Never the less beam was very tight as you can imagine.
I believe the ideal will be somewhere in between 9 and 18x for this lens and this diode.

How do you guys find the side lines and artifacts around the primary beam projection?
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Last edited by Milos; 02-08-2016 at 01:22 PM.
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Old 02-08-2016, 03:07 PM #15
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Default Re: 6X Cylindrical pair test from group buy.

interesting,
But measuring the line length is tricky, and varies depending on the glow of the dot, and what you actually decide to measure.

What power are you set to output when doing these tests?

Do you know the difference between G1 and G2 lens when it comes to NUBM44, or in general. Is one better than the other.
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Old 02-14-2016, 07:06 PM #16
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Default Re: 6X Cylindrical pair test from group buy.

Excuse my question,

What is the recommended distance between lenses? I suppose it could be calculated from focal distances, but did Glutton or anyone mention what they are?

Positioning cylindricals flat to flat surfaces does have any reason, or can be done differently?
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